The RFLC-117-1-450M from RF-Lambda is a Space Qualified Circulator with Frequency 383 to 518 MHz, Bandwidth 135 MHz, Average Power Forward 200 W, Average Power Reverse 20 W, Insertion Loss 0.4 to 1.4 dB. Tags: Module with Connector, Coaxial Circulator. More details for RFLC-117-1-450M can be seen below.